5 answers

# You can set the default proxies for Wget to use for http, https, and ftp.
# They will override the value in the environment.
#https_proxy = http://proxy.yoyodyne.com:18023/
#http_proxy = http://proxy.yoyodyne.com:18023/
#ftp_proxy = http://proxy.yoyodyne.com:18023/
# If you do not want to use proxy at all, set this to off.
#use_proxy = on

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for YUM

we are going to configure YUM software to use proxy to get LINUX updated with new softwares all the times with repositories available on internet.

If you want to do everything through a proxy, rather than setup proxies for individual software packages, I would recommend changing the global settings. Open up "gnome-control-center" from the terminal, go to network settings and edit the proxy configuration there.

If you are using a system in an environment that requires username & password (which should change regularly). You can use this. I place it in my .bashrc file. Replacing the PROXYSERVER:PORT with the on that is appropriate for your environment.

Open a new shell, type "proxy" and it will ask for the username and a (non-echoed) password. I ask for the username as my systems are in a shared-user environment as well. This has worked for yum, wget and everything else I have tried so far.